275
6
F
2
S
0
8
3
4
described above and monitor the signal reception at the other end on the "Binary input &
output" screen.
In the BOP scheme, the end-to-end test can be carried out more simply on the "Manual test" screen
of the "Test" sub-menu. For the details, see Section 4.2.7.2.
Note:
In these tests it is recommended to block the tripping circuit to prevent false tripping.
6.6.3 Tripping and Reclosing Circuit Test
The tripping and reclosing circuit including the circuit breaker is checked by forcibly operating
the output relay and monitoring the circuit breaker to confirm that it is tripped or reclosed.
Forcible operation of the output relay is performed on the "Binary output" screen of the "Test"
sub-menu as described in Section 6.4.3.
Tripping circuit
•
Set the breaker to be closed.
•
Press 3 (= Binary output) on the "Test" sub-menu screen to display the "Binary output" screen.
The LCD displays the output modules mounted.
•
Enter 1 to select the IO#1 module, then the LCD displays the screen shown below.
/ 3
B O
( 0 = D i s a b l e
1 = E n a b l e )
1 / 3
I O #
T P -
0
I O #
0
I O #
0
B 1
T P - A 1
T P - C 1
1
1
1
TP-A1, B1 and C1 are output relays with one normally open contact, and trip the A-phase,
B-phase and C-phase circuit breakers.
•
Enter 1 for TP-A1 and press the ENTER key.
•
Press
the END key. Then the LCD displays the screen shown below.
/ 3
B O
K e e p p r e s s
1
o o p e r a t e .
C A N C E
t o
c a n c e l .
L
P r e s s
n
i
g
t
•
Keep pressing the 1 key to operate the output relay TP-A1 and check that the A-phase
breaker is tripped.
•
Release
the 1 key to reset the operation.
•
Repeat the above for all the phases.
Reclosing circuit
The test is applied to the autoreclose function if used.
•
Ensure that the circuit breaker is open.
•
Press 3 (= Binary output) on the "Test" sub-menu screen to display the "Binary output" screen.
The LCD displays the output modules mounted.
•
Enter the selected number corresponding to each module to be operated. The LCD will display
the name of the module, the name of the output relay, the name of the terminal block and the
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Summary of Contents for GRZ100-211B
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